# SDR SWAA118319

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 1, 2011
- Submitted: December 5, 2011
- Operation: Air carrier
- Aircraft: [N280WN](https://openairdocs.org/aircraft/N280WN), registered now
- Make and model: Boeing 737-7H4
- Registry model: [Boeing 737-7H4](https://openairdocs.org/model/boeing-737-7h4) (OpenAirDocs)
- Aircraft serial: 32533
- Aircraft time: 16,374 hours, 9,694 cycles
- System (JASC): [2913 · Hydraulic Pump (Electric/Engine), Main](https://openairdocs.org/jasc/2913)
- Part: Pump
- Part number: 849589
- Part serial: MX709063
- Condition: Faulty
- Location: Nr 1 Engine
- Stage of operation: CR
- How discovered: O
- Nature of condition: J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SWAA118319

## Discrepancy

DIVERSION - AT CRUISE ALT FL400, A-SYSTEM HYDRAULIC QTY TO 15 PERCENT AND A-SYSTEM ENGINE DRIVEN PUMP LOW PRESSURE LIGHT ILLUMINATED.  REMOVED AND REPLACED HYDRAULIC ENGINE DRIVEN PUMP, EDP PRESSURE HOSE, AND CASE DRAIN FILTER PER MM.

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